I just wanted to post a cool trick out there,
In windows 2003, set up a terminal server. this trick will only work if u are on a workgroup or domain network. Go to the administrative tools and choose the Terminal Services Manager utility. Go to the actions tab and connect to any computer on your network (you only have to know the ip address or computer name of your victim). Next right click on your victims computer (in the window) and select Log off. And your done.

Im not sure if this can also be done in windows 2000 server but i will test it and tell u guys.

That is possible to do with Windows 2000 Pro, Server, Adv. Server, D.C., XP Home and PRO. If you go to computer management, right click and click on "Connect to another computer" You can do that. Then you right click on their computer, go to Poperties/Advanced/Startup Shutdown. From there you can log off, restart, shut down a victim's computer. I used to do this all the time to this one kid in one of my Windows 2000 classes. It's a fun thing to do.

Novell Netware for Windows? I'm guessing you are doing this in a class, if you have the permissions to do that and you are also running NetWare. Do people have their own Domain set up? Thats a thing, you have to be in the same workgroup or domain.